The U.S. government paid 90 percent of the cost of limited-access
A) nuclear-powered passenger ships and barges.
B) major airports to support the struggling airline industry.
C) subway and light rail systems in urban areas.
D) high-speed interstate highways.
E) passenger trains.
Answer: D
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Given the following generic chemical reaction, which is the product? X ? Y
A. X is the product. B. Y is the product. C. ? is the product. D. Both X and Y are the products. E. Both X and Y are the reactants.
A colleague suggests that the use of corn for ethanol production is causing a rise in corn prices and corn shortages that essentially starve children to fuel American cars. A scientist investigates and suggests this relationship is only partly true
Which of the following best describes what the scientist discovered? A) Most of the money saved by using ethanol is used by charitable organizations that feed the poor. B) The process of making ethanol also produces antibiotics to help prevent human diseases. C) Although corn prices have risen, much more corn is being planted, and corn used for ethanol production still yields useful food products. D) Ethanol production uses part of corn not used to feed either animals or humans.
Explain how Milankovitch cycles explain when ice ages occur
What will be an ideal response?
Dew point is the ________ where relative humidity is 100%
A) Saturation vapor pressure B) Vapor pressure C) Atmospheric pressure D) Temperature E) Barometric pressure